[coastguard skipped] Merge sparse cherrypicks from sparse-13023662-L95400030009450945 into 25Q1-release.

COASTGUARD_SKIP: I5681a36bf28d70ce37e583b088511c9ebd8955b4

Change-Id: I0f16c43ef14a82a740e14c54d5377d58e8d28f88
tree: c83de9633f795fe121874e69d03aa468c25b4b26
  1. backported_fixes/
  2. ci/
  3. common/
  4. core/
  5. packaging/
  6. target/
  7. teams/
  8. tests/
  9. tools/
  10. .gitignore
  11. Android.bp
  12. banchanHelp.sh
  13. buildspec.mk.default
  14. Changes.md
  15. CleanSpec.mk
  16. Deprecation.md
  17. envsetup.sh
  18. help.sh
  19. navbar.md
  20. OWNERS
  21. PREUPLOAD.cfg
  22. rbesetup.sh
  23. README.md
  24. shell_utils.sh
  25. tapasHelp.sh
  26. Usage.txt
README.md

Android Make Build System

This is the Makefile-based portion of the Android Build System.

For documentation on how to run a build, see Usage.txt

For a list of behavioral changes useful for Android.mk writers see Changes.md

For an outdated reference on Android.mk files, see build-system.html. Our Android.mk files look similar, but are entirely different from the Android.mk files used by the NDK build system. When searching for documentation elsewhere, ensure that it is for the platform build system -- most are not.

This Makefile-based system is in the process of being replaced with Soong, a new build system written in Go. During the transition, all of these makefiles are read by Kati, and generate a ninja file instead of being executed directly. That's combined with a ninja file read by Soong so that the build graph of the two systems can be combined and run as one.